Sheet-cutting machine



Oct. 28, 1930.

T R. F. PAUP SHEET CUTTING MACHINE Filed Jan. 22, 1929 Patented Oct. .28, 1930 UNITED? STATES-J no"! F. Paul; or CHICAGO, ILLINoIs, AssIGNoa'ro e Lnnou oomrnnxn oonro I BATION OFILIgINOISJ V l 1 SHEET-commits MAQHINZVEV 'The principal object'of thi-sinvention is to overcome the tendency of asphalt to adhere to the blades used in" cutting sheets of prepared roofing and the like.

" Fig. 1 is a longitudinal vsectional View through a conventional roofing machine with the preferred form of my invention applied thereto; Fig. 2 is a V sheet of roofing illustrating the operations performed in converting thesheet into shingle strips and Fig. 3 "s a through .the preferred form of moistening roller used in applying the invention.

' But this specific description and the correspondingly specific illustration are used for the purpose of disclosure only and it is intended that the claims should be construed 2 commensurate with the invention notwithstanding the specific disclosure.

In Fig. 1, 10 indicates a roll equipped with cutters or blades 11 cooperating with blocks 12 on a roll'13. These tools make the two- 7 line cuts 14:, Fig. 2,'fin'the margins of the sheet 20 andthe three-line cuts 15 in the intermediate portion of the sheet.

The sheet DBXt' passes to the left in Fig. 1 to a roll 16 equipped with knockers 17 which cooperate with depressions 18 in a companion roll 19. This operation serves to bend the cut-away portions, downwardly in Fig. 1;

The sheet 20 is then drawn by draw rolls 21 and fed to a cutter consisting of fly knives 22 and anvil 23, the former revolving about a shaft'24.

Machines of this'general construction are diagrammatic plan View of a transverse sectional I view.

ticularly important that there shall not be sufiicient moisture to be thrown ofi by .cen trifugal force and scattered overthe surface of the roofing vThediflioultyis fabric. T' As shown'in Figs. 1 and 3 stroller exterior with a plurality of sheet-s 26ofwool felt folded along the middle and held to the roll by wires 27. The rolls 25 are driven if at all, only by the action of the blades-or thelike; The structure of these rolls is very similar to the so-called-couching rolls used in paper manufacturing machines'and for convenience they will be designated bythat name. I I I Adjacent tol'each roll is mounted a perforated pipe 28 equipped with, valves 29 controlling a supply of water or other suitable liquid. v i

In practice it will be sufficient to open the valves for a short time intermittently, there by supplying-a limited amount of liquid to the felt, and it should not be more than is necessary to just moisten the surfaces of the blades or the like that come in contact with the sheets of felt 26.

By this simple expedient the difliculty so common in these machines of the asphalt ad hering to the metallic surfaces and interfering with the proper operation of the machine, is entirely overcome.

I claim as my invention:

1. In a machine of the class described, a

best overcome by causing the blades to runagainst or str ke-a moist rotating blade adapted to out sheets treated operations and applying moisture to the blade. 2

2. In a machine of the class described, a

blade rotating about an axis lying substanwith asphalt, a cutting blade having intermittent cutting operations, an absorbent device normally out of contact with the blade and dis osed to be struck and wiped by the cutting blade between the cutting operations thereof for applying moisture to the blade preparatory to cutting, and means for supplying moisture to the absorbent device. v

4. n a machine for cutting sheets treated with -asphalt a-eutting"blade havi inter-- mittent cutting operations, an abso' ent'device including an idle roll having an absorbent surface, said roll being disposed to be struck, wiped and rotated by the cutting blade between cuttingopei-ations thereof for applying moisture to the: blade preparatory to cutting, and means for applying moisture to the absorbent surface of the roll. a

5. In a machine for cutting sheets: treated 90 with lasphztlt mutually oo-acting cutting ele ments having intermittent cooperative cutt ing;eperations, an absorbent member normally out of contact with the cutter members and disposed-inthe ath of one of the cuttar-members remote rom the location of the cuttiflgbpbrationsflthereof to be struck and wiped: said cutterimen'iber between successive cutting operations thereof' 'for applying moisture to said cutter;membenpreparatory touch cutting operation thereof, and means for supplying moisture to ;the absorbent member. s U V,

In testimony whereof I aflix my signature.

' ROY .PAUP. 

